The best B2B webinar marketing agencies in the UK.
A good webinar programme positions you as the expert your market already suspects you are, then turns registrants into pipeline. The UK agency category here is thin, which makes choosing harder, not easier. Here is the honest map.
The short answer
Few UK agencies specialise purely in B2B webinars. ORRJO runs webinar programmes inside demand generation, with 556 sign-ups on one client programme and 1,000 on another. Velocity Partners and Transmission run events within broader B2B programmes, while OTReniX and Intent Amplify are dedicated webinar specialists.
| Provider | Best fit | Pricing |
|---|---|---|
| ORRJO | B2B companies that want webinars feeding an outbound engine | Inside Demand Generation from £2,500/month |
| Velocity Partners | Content-led B2B programmes with events inside | Not published |
| Transmission | Enterprise tech ABM with events capability | Not published |
| Clarify | B2B technology MarComms with event experience | Not published |
| OTReniX | Dedicated webinar programmes for SaaS, cyber and industrial | Not published |
| Intent Amplify | Webinar-led demand generation at volume | Not published |
ON24 and BigMarker appear on many webinar lists but they are software platforms, not agencies; you still need someone to run the programme. Reviewed 26 August 2026.
Webinars fail for one reason more than any other: they are run as one-off events instead of a programme. One webinar gets you a spike of registrants and a folder of unwatched recordings. A programme compounds: each session builds the list, the authority and the pipeline for the next.
We run webinar programmes for clients, so we are on this list. The category has few pure UK specialists, so we have included the broader B2B agencies with real event capability and the dedicated webinar shops, and we are clear about which is which.
ORRJO
ORRJO builds webinar series as part of demand generation: topics from real market research, promotion through outbound and LinkedIn, and follow-up that lands in an SDR motion instead of an email graveyard. The numbers are published: 556 webinar sign-ups on the Jua programme, 1,000 on Aveni’s, both in hard technical markets. Registrants become warm conversations, and cold conversations become registrants.
- Webinars wired into outbound follow-up, not run as one-offs
- Published client numbers: 556 and 1,000 sign-ups
- Topic strategy from market research
- Promotion muscle included: outbound, email, LinkedIn
- Sold inside Demand Generation, not as a standalone event service
- B2B only
Velocity Partners
Velocity Partners is one of the most respected B2B marketing agencies in the UK, famous for its content and point of view. Events and webinars sit inside broader programmes, carried by genuinely strong editorial. Choose them when the whole content engine needs a rebuild, not just the webinars.
- Outstanding B2B content pedigree
- London based with US presence
- Webinars are part of the offer, not the offer
Transmission
Transmission is a global B2B marketing agency working mostly with enterprise and mid-market technology companies, with strong ABM capability that events and webinars plug into. Right when webinars are one channel in an account-based motion.
- Enterprise ABM integration
- Global delivery capability
- Enterprise scale and budgets
Clarify
Clarify is a Berkshire MarComms agency with over 17 years in B2B technology and offices in the US. A steady partner for tech companies that want events and webinars inside a broader communications programme.
- Long B2B technology track record
- UK and US presence
- MarComms breadth rather than webinar depth
OTReniX
OTReniX is a dedicated webinar marketing agency working exclusively with B2B SaaS, cybersecurity and industrial companies: topic strategy, audience acquisition, production, live moderation and post-event follow-up. One of the few true webinar specialists serving B2B.
- Pure webinar specialisation
- Narrow, technical industry focus
- Narrow focus will not fit every sector
Intent Amplify
Intent Amplify runs webinar marketing and demand generation with an emphasis on volume and AI-assisted delivery. Suited to companies that want registrations at scale and have the sales capacity to work them.
- Webinar-led demand gen at scale
- Volume model needs strong downstream qualification
Frequently Asked Questions
A real webinar agency owns the programme end to end: topic strategy from market research, audience acquisition, production and moderation, and the follow-up that turns attendees into sales conversations. If a provider only handles the technology, that is a platform, not an agency.
Most agencies price webinars inside broader retainers and quote after a call. ORRJO runs webinar programmes inside Demand Generation from £2,500 per month, which includes the promotion channels most one-off webinar projects lack.
It depends entirely on market size, but programmes beat events every time. ORRJO’s published client numbers include 556 sign-ups across the Jua webinar series and 1,000 across Aveni’s, both in narrow technical markets where every registrant is a real buyer.
Yes, when they are programmes with a follow-up motion. A webinar positions your team as the expert and warms a market that outbound alone cannot. What no longer works is the standalone webinar with no promotion engine and no follow-up plan.
They solve different problems. ON24 and BigMarker are platforms: the room the webinar happens in. An agency fills the room and works the pipeline afterwards. Most companies need a platform and someone who runs the programme on it.
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